STEVAL-LNBH01 Datasheet, PDF (1/4 Pages) STMicroelectronics – Power supply evaluation board for LNB based on the LNBH25LS

STEVAL-LNBH01
Power supply evaluation board for LNB based on the LNBH25LS
Data brief
Features
 Complete interface between LNB and I²C
bus
 Built-in DC-DC converter for single 12 V
supply operation and high efficiency (typ.
93% at 0.5 A)
 Selectable output current limit by external
resistor
 Compliant with output voltage specifications
for principal satellite receivers (15
programmable levels)
 Accurate built-in 22 kHz tone generator suits
widely accepted standards
 22 kHz tone waveform integrity guaranteed
even at no load condition
 Low drop post regulator and high efficiency
step-up PWM with integrated power N-MOS
for low power losses
 LPM function (low power mode) to reduce
dissipation
 Overload and overtemperature internal
protection with I²C diagnostic bits
 LNB short-circuit dynamic protection
 ±4 kV ESD tolerant on output power pins
 RoHS compliant
Description
This evaluation board implements a DC-DC
converter based on the LNBH25LS device. It is
used to power LNBs inside dish antennas to
receive satellite TV signals.
The LNBH25LS is an integrated solution for
supplying / interfacing satellite LNB modules in
accordance with international standards. This
simple solution offers a complete solution for dual
tuner satellite receivers and offers high
performance at low cost with a low external
component count.
The LNBH25LS evaluation board includes an I²C
bus interface and the internal 22 kHz tone
generator which is factory trimmed and can be
controlled by the DSQIN pin (TTL compatible),
allowing immediate DiSEqC™ data encoding.
Thanks to a fully integrated step-up DC-DC
converter, it functions with a single input voltage
supply source ranging from 8 V to 16 V.
September 2016
DocID029697 Rev 1
For further information contact your local STMicroelectronics sales
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